brand new rods and crank 25 races ago
chevy performance block
11 heads
2 1/2 injection
4 inch stroke crank
kinser air box
no mag
$6,500
call or text 812-264-9201
text for pictures

Is this a 4” bore block?

yes its a 400 block

Typically a 400 block is 4.125 bore. With your 4” stroke crank that’s 427 ci

A 400 block .030 over with a 4" stroke = 434